{"id":3075,"date":"2023-07-19T07:50:49","date_gmt":"2023-07-19T07:50:49","guid":{"rendered":"https:\/\/statorials.org\/ja\/r%e3%83%95%e3%82%a1%e3%82%a4%e3%83%ab%e3%83%aa%e3%82%b9%e3%83%88\/"},"modified":"2023-07-19T07:50:49","modified_gmt":"2023-07-19T07:50:49","slug":"r%e3%83%95%e3%82%a1%e3%82%a4%e3%83%ab%e3%83%aa%e3%82%b9%e3%83%88","status":"publish","type":"post","link":"https:\/\/statorials.org\/ja\/r%e3%83%95%e3%82%a1%e3%82%a4%e3%83%ab%e3%83%aa%e3%82%b9%e3%83%88\/","title":{"rendered":"R \u3067 list.files() \u95a2\u6570\u3092\u4f7f\u7528\u3059\u308b\u65b9\u6cd5 (4 \u3064\u306e\u4f8b)"},"content":{"rendered":"<p><\/p>\n<hr>\n<p><span style=\"color: #000000;\">R \u306e<strong>list.files()<\/strong>\u95a2\u6570\u3092\u4f7f\u7528\u3059\u308b\u3068\u3001\u7279\u5b9a\u306e\u30d5\u30a9\u30eb\u30c0\u30fc\u5185\u306e\u3059\u3079\u3066\u306e\u30d5\u30a1\u30a4\u30eb\u3092\u4e00\u89a7\u8868\u793a\u3067\u304d\u307e\u3059\u3002<\/span><\/p>\n<p><span style=\"color: #000000;\">\u6b21\u306e\u4f8b\u306f\u3001<\/span> <span style=\"color: #000000;\">3 \u3064\u306e CSV \u30d5\u30a1\u30a4\u30eb\u3068 2 \u3064\u306e TXT \u30d5\u30a1\u30a4\u30eb\u3092\u542b\u3080<strong>my_data_files<\/strong>\u3068\u3044\u3046\u30d5\u30a9\u30eb\u30c0\u30fc\u3092\u4f7f\u7528\u3057\u305f\u3055\u307e\u3056\u307e\u306a\u30b7\u30ca\u30ea\u30aa\u3067\u3053\u306e\u95a2\u6570\u3092\u4f7f\u7528\u3059\u308b\u65b9\u6cd5\u3092\u793a\u3057\u3066\u3044\u307e\u3059\u3002<\/span> <\/p>\n<p><img decoding=\"async\" loading=\"lazy\" class=\" wp-image-26352 aligncenter\" src=\"https:\/\/statorials.org\/wp-content\/uploads\/2023\/08\/listefichiers1.jpg\" alt=\"\" width=\"494\" height=\"515\" srcset=\"\" sizes=\"auto, \"><\/p>\n<h3><span style=\"color: #000000;\"><strong>\u4f8b 1: \u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u5185\u306e\u3059\u3079\u3066\u306e\u30d5\u30a1\u30a4\u30eb\u3092\u30ea\u30b9\u30c8\u3059\u308b<\/strong><\/span><\/h3>\n<p><span style=\"color: #000000;\"><span style=\"color: #000000;\">\u6b21\u306e\u69cb\u6587\u3092\u4f7f\u7528\u3057\u3066\u3001\u3053\u306e\u30d5\u30a9\u30eb\u30c0\u30fc\u5185\u306e\u3059\u3079\u3066\u306e\u30d5\u30a1\u30a4\u30eb\u3092\u4e00\u89a7\u8868\u793a\u3067\u304d\u307e\u3059\u3002<\/span><\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008080;\">#display all files in my_data_files folder<\/span>\nlist. <span style=\"color: #3366ff;\">files<\/span> ('C:\/Users\/bob\/Documents\/my_data_files')\n\n[1] \"df1.csv\" \"df2.csv\" \"df3.csv\" \"more_data.txt\" \"some_data.txt\"\n<\/strong><\/pre>\n<p><span style=\"color: #000000;\">\u3053\u306e\u30d5\u30a9\u30eb\u30c0\u30fc\u5185\u306e 5 \u3064\u306e\u30d5\u30a1\u30a4\u30eb\u306e\u540d\u524d\u304c\u78ba\u8a8d\u3067\u304d\u307e\u3059\u3002<\/span><\/p>\n<p><span style=\"color: #000000;\">\u30d5\u30a9\u30eb\u30c0\u30fc\u5185\u306b\u3042\u308b\u30d5\u30a1\u30a4\u30eb\u306e\u6570\u3092\u77e5\u308a\u305f\u3044\u3060\u3051\u306e\u5834\u5408\u306f\u3001 <strong>length()<\/strong>\u95a2\u6570\u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u3082\u3067\u304d\u307e\u3059\u3002<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008080;\">#display total number of files in my_data_files folder<\/span>\nlength(list. <span style=\"color: #3366ff;\">files<\/span> ('C:\/Users\/bob\/Documents\/my_data_files'))\n\n[1] 5<\/strong><\/pre>\n<h3><span style=\"color: #000000;\"><strong>\u4f8b 2: \u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u5185\u306e\u6700\u521d\u306e N \u30d5\u30a1\u30a4\u30eb\u3092\u30ea\u30b9\u30c8\u3059\u308b<\/strong><\/span><\/h3>\n<p><span style=\"color: #000000;\">\u6b21\u306e\u69cb\u6587\u3092\u4f7f\u7528\u3059\u308b\u3068\u3001\u3053\u306e\u30d5\u30a9\u30eb\u30c0\u30fc\u5185\u306e\u6700\u521d\u306e 3 \u3064\u306e\u30d5\u30a1\u30a4\u30eb\u306e\u307f\u3092\u4e00\u89a7\u8868\u793a\u3067\u304d\u307e\u3059\u3002<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008080;\">#display first three files in my_data_files folder<\/span>\nlist. <span style=\"color: #3366ff;\">files<\/span> ('C:\/Users\/bob\/Documents\/my_data_files')[1:3]\n\n[1] \"df1.csv\" \"df2.csv\" \"df3.csv\"\n<\/strong><\/pre>\n<p><span style=\"color: #000000;\">\u3053\u306e\u30d5\u30a9\u30eb\u30c0\u30fc\u5185\u306e\u6700\u521d\u306e 3 \u3064\u306e\u30d5\u30a1\u30a4\u30eb\u306e\u540d\u524d\u306e\u307f\u304c\u8868\u793a\u3055\u308c\u307e\u3059\u3002<\/span><\/p>\n<h3><span style=\"color: #000000;\"><strong>\u4f8b 3: \u7279\u5b9a\u306e\u62e1\u5f35\u5b50\u3092\u6301\u3064\u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u5185\u306e\u3059\u3079\u3066\u306e\u30d5\u30a1\u30a4\u30eb\u3092\u4e00\u89a7\u8868\u793a\u3059\u308b<\/strong><\/span><\/h3>\n<p><span style=\"color: #000000;\"><strong>pattern<\/strong>\u5f15\u6570\u3092\u4f7f\u7528\u3057\u3066\u3001\u7279\u5b9a\u306e\u62e1\u5f35\u5b50\u3092\u6301\u3064\u30d5\u30a1\u30a4\u30eb\u306e\u307f\u3092\u30ea\u30b9\u30c8\u3059\u308b\u3053\u3068\u3082\u3067\u304d\u307e\u3059\u3002<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008080;\">#display all files with CSV extension in my_data_files folder\n<\/span>list. <span style=\"color: #3366ff;\">files<\/span> ('C:\/Users\/bob\/Documents\/my_data_files', pattern=' <span style=\"color: #ff0000;\">csv<\/span> ')\n\n[1] \"df1.csv\" \"df2.csv\" \"df3.csv\"<\/strong><\/pre>\n<p> <span style=\"color: #000000;\"><strong>.csv<\/strong>\u62e1\u5f35\u5b50\u3092\u6301\u3064 3 \u3064\u306e\u30d5\u30a1\u30a4\u30eb\u304c\u8868\u793a\u3055\u308c\u307e\u3059\u3002<\/span><\/p>\n<h3><span style=\"color: #000000;\"><strong>\u4f8b 4: \u6587\u5b57\u5217\u3092\u542b\u3080\u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u5185\u306e\u3059\u3079\u3066\u306e\u30d5\u30a1\u30a4\u30eb\u3092\u4e00\u89a7\u8868\u793a\u3059\u308b<\/strong><\/span><\/h3>\n<p><span style=\"color: #000000;\">pattern \u5f15\u6570\u3092\u4f7f\u7528\u3057\u3066\u3001\u7279\u5b9a\u306e\u6587\u5b57\u5217\u3092\u542b\u3080\u30d5\u30a1\u30a4\u30eb\u306e\u307f\u3092\u30ea\u30b9\u30c8\u3059\u308b\u3053\u3068\u3082\u3067\u304d\u307e\u3059\u3002<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008080;\">#display all files that contain 'data' in file name\n<\/span>list. <span style=\"color: #3366ff;\">files<\/span> ('C:\/Users\/bob\/Documents\/my_data_files', pattern=' <span style=\"color: #ff0000;\">data<\/span> ')\n\n[1] \"more_data.txt\" \"some_data.txt\"\n<\/strong><\/pre>\n<p><span style=\"color: #000000;\">\u3069\u3061\u3089\u3082\u30d5\u30a1\u30a4\u30eb\u540d\u306b\u300cdata\u300d\u3092\u542b\u3080 2 \u3064\u306e\u30d5\u30a1\u30a4\u30eb\u304c\u8868\u793a\u3055\u308c\u307e\u3059\u3002<\/span><\/p>\n<h3><span style=\"color: #000000;\"><strong>\u8ffd\u52a0\u30ea\u30bd\u30fc\u30b9<\/strong><\/span><\/h3>\n<p><span style=\"color: #000000;\">\u6b21\u306e\u30c1\u30e5\u30fc\u30c8\u30ea\u30a2\u30eb\u3067\u306f\u3001R \u3067\u4ed6\u306e\u4e00\u822c\u7684\u306a\u30bf\u30b9\u30af\u3092\u5b9f\u884c\u3059\u308b\u65b9\u6cd5\u306b\u3064\u3044\u3066\u8aac\u660e\u3057\u307e\u3059\u3002<\/span><\/p>\n<p> <a href=\"https:\/\/statorials.org\/ja\/csv\u3092r\u306b\u30a4\u30f3\u30db\u309a\u30fc\u30c8\/\" target=\"_blank\" rel=\"noopener\">CSV\u30d5\u30a1\u30a4\u30eb\u3092R\u306b\u30a4\u30f3\u30dd\u30fc\u30c8\u3059\u308b\u65b9\u6cd5<\/a><br \/><a href=\"https:\/\/statorials.org\/ja\/r-lurl-\u304b\u3089-csv-\u3092\u8aad\u307f\u53d6\u308b\/\" target=\"_blank\" rel=\"noopener\">R \u3067 URL \u304b\u3089 CSV \u3092\u30a4\u30f3\u30dd\u30fc\u30c8\u3059\u308b\u65b9\u6cd5<\/a><br \/><a href=\"https:\/\/statorials.org\/ja\/excel\u3092r\u306b\u30a4\u30f3\u30db\u309a\u30fc\u30c8\/\" target=\"_blank\" rel=\"noopener\">Excel\u30d5\u30a1\u30a4\u30eb\u3092R\u306b\u30a4\u30f3\u30dd\u30fc\u30c8\u3059\u308b\u65b9\u6cd5<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>R \u306elist.files()\u95a2\u6570\u3092\u4f7f\u7528\u3059\u308b\u3068\u3001\u7279\u5b9a\u306e\u30d5\u30a9\u30eb\u30c0\u30fc\u5185\u306e\u3059\u3079\u3066\u306e\u30d5\u30a1\u30a4\u30eb\u3092\u4e00\u89a7\u8868\u793a\u3067\u304d\u307e\u3059\u3002 \u6b21\u306e\u4f8b\u306f\u3001 3 \u3064\u306e CSV \u30d5\u30a1\u30a4\u30eb\u3068 2 \u3064\u306e TXT \u30d5\u30a1\u30a4\u30eb\u3092\u542b\u3080my_data_files\u3068\u3044\u3046\u30d5\u30a9\u30eb\u30c0 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[16],"tags":[],"class_list":["post-3075","post","type-post","status-publish","format-standard","hentry","category-16"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v21.5 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>R \u3067 list.files() \u95a2\u6570\u3092\u4f7f\u7528\u3059\u308b\u65b9\u6cd5 (4 \u3064\u306e\u4f8b) \u2013 \u8a18\u4e8b<\/title>\n<meta name=\"description\" content=\"\u3053\u306e\u30c1\u30e5\u30fc\u30c8\u30ea\u30a2\u30eb\u3067\u306f\u3001R \u3067 list.files() \u95a2\u6570\u3092\u4f7f\u7528\u3059\u308b\u65b9\u6cd5\u3092\u3044\u304f\u3064\u304b\u306e\u4f8b\u3068\u3068\u3082\u306b\u8aac\u660e\u3057\u307e\u3059\u3002\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/statorials.org\/ja\/r\u30d5\u30a1\u30a4\u30eb\u30ea\u30b9\u30c8\/\" \/>\n<meta property=\"og:locale\" content=\"ja_JP\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"R \u3067 list.files() \u95a2\u6570\u3092\u4f7f\u7528\u3059\u308b\u65b9\u6cd5 (4 \u3064\u306e\u4f8b) \u2013 \u8a18\u4e8b\" \/>\n<meta property=\"og:description\" content=\"\u3053\u306e\u30c1\u30e5\u30fc\u30c8\u30ea\u30a2\u30eb\u3067\u306f\u3001R \u3067 list.files() \u95a2\u6570\u3092\u4f7f\u7528\u3059\u308b\u65b9\u6cd5\u3092\u3044\u304f\u3064\u304b\u306e\u4f8b\u3068\u3068\u3082\u306b\u8aac\u660e\u3057\u307e\u3059\u3002\" \/>\n<meta property=\"og:url\" content=\"https:\/\/statorials.org\/ja\/r\u30d5\u30a1\u30a4\u30eb\u30ea\u30b9\u30c8\/\" \/>\n<meta property=\"og:site_name\" content=\"Statorials\" \/>\n<meta property=\"article:published_time\" content=\"2023-07-19T07:50:49+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/statorials.org\/wp-content\/uploads\/2023\/08\/listefichiers1.jpg\" \/>\n<meta name=\"author\" content=\"\u30d9\u30f3\u30b8\u30e3\u30df\u30f3\u30fb\u30a2\u30f3\u30c0\u30fc\u30bd\u30f3\u535a\u58eb\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"\u57f7\u7b46\u8005\" \/>\n\t<meta name=\"twitter:data1\" content=\"\u30d9\u30f3\u30b8\u30e3\u30df\u30f3\u30fb\u30a2\u30f3\u30c0\u30fc\u30bd\u30f3\u535a\u58eb\" \/>\n\t<meta name=\"twitter:label2\" content=\"\u63a8\u5b9a\u8aad\u307f\u53d6\u308a\u6642\u9593\" \/>\n\t<meta name=\"twitter:data2\" content=\"1\u5206\" \/>\n<script type=\"application\/ld+json\" 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\u95a2\u6570\u3092\u4f7f\u7528\u3059\u308b\u65b9\u6cd5\u3092\u3044\u304f\u3064\u304b\u306e\u4f8b\u3068\u3068\u3082\u306b\u8aac\u660e\u3057\u307e\u3059\u3002\",\"breadcrumb\":{\"@id\":\"https:\/\/statorials.org\/ja\/r%e3%83%95%e3%82%a1%e3%82%a4%e3%83%ab%e3%83%aa%e3%82%b9%e3%83%88\/#breadcrumb\"},\"inLanguage\":\"ja\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/statorials.org\/ja\/r%e3%83%95%e3%82%a1%e3%82%a4%e3%83%ab%e3%83%aa%e3%82%b9%e3%83%88\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/statorials.org\/ja\/r%e3%83%95%e3%82%a1%e3%82%a4%e3%83%ab%e3%83%aa%e3%82%b9%e3%83%88\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"\u5bb6\",\"item\":\"https:\/\/statorials.org\/ja\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"R \u3067 list.files() \u95a2\u6570\u3092\u4f7f\u7528\u3059\u308b\u65b9\u6cd5 (4 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